2 Answers
2

Go to Napa, Autozone, Pepboys or similar - they all stock the specific glue that you need to reattach the mirror.

As with most jobs that involve sticking dissimilar materials together, cleanliness is the key - make sure that you get all the old glue off both the windshield (fairly easy) and the metal button (not that easy). Follow the instructions on the pack to the letter. I had to reglue the mirror on my wife's Cherokee a few months back, it's a really easy job, just take your time with the prep and give the glue enough time to harden before you put any load on the metal button.

Had a similar issue and after 2 failed attempts (mirror came off in several days) I went to a window repair station (where they replace windows) and ask a technician to reglue my mirror - cost me next to nothing, holds on perfectly. Another secret I saw is to detach metal button from the mirror before regluing it, let the glue work and only then attach the mirror to glued button.
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Krom SternOct 7 '11 at 4:12